Is ch3cl2 possible? if yes what is the structure if it?

No, it is not possible

Explanation:

carbon is a tetravalent element. which means that it can form covalent bonds with various other elements as it has 4 electrons in its valence shell. in this compound, CH3Cl2, 3 electrons are already occupied with hydrogen. the only remaining electrom can be taken by a chlorine element forming a compound Chloromethane. but there is no space for another atom of chlorine to form CH3Cl2. therefore this compound is not possible

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

pv=nrt

explanation: